This is the Hamstermobile.
The Hamstermobile is the strange contraption made of vines, planks, sticks, and hamsters in the game Ham Race. This machinery works only when a hamster is in motion (when clicking the corresponding mouse button). This is the most important part of the game, as it can only trigger reactions in the game. The Hamstermobile can be altered by ice blocks. Being made of flexible material, it is able to squeeze through tight spaces such as narrow tunnels.